Container, materials and parts therefor



u 'i 2%, 1%; 1 ZALKMD v 2,406,123

CONTAINER, MATERIAL, AND PARTS THEREFQR Original Filed March 4, 1942 ZSheetS-Sheet; 1

Aug. 20, 1946. 'P.ZALKlND 2,406,123

CONTAINER, MATERIAL-AND PARTS THERE-FOR Original F i 1ed March 4, 1942 2 Sheets-Sheet 2 Patented Aug. 20, 1946 CONTAINER, MATERIALS-AND PARTS":

' THEREFOR r Philip Zalkind, New York, N. Y.

'Application March 14, 1942, Serial No. 434,649,-

which is a division of application Serial 'No. 196,139, March 16,1938. 1 Divided and this applicationFebruary 18, 1944, SeriaLNo; 522,853

1 I This invention is a division of my application serialgNo. 434,649, filed March.,14, 1942, which in turn is a division of my Patent No. 2,276,363, issued March 17, 1942. The invention described and claimed in this application relates to containers and parts thereof constructed. from fibrous sheet materials andimprovements therein,-and more specifically relates to corrugated board, paper board, cardboard, felt cloth, paper material and other types of fibrous sheet material, methods of producing them and their: use in connection with collapsible containers.

The present invention relates more specifically to means for securing: together'edgcs of sheet material, and has for its primary object the formation of a secure and safe fastening for con-' tainers, cartons and the like.

Another object of the present invention is the provision of a closure means for safety envelopes.

Other objects and uses of my invention will be apparent from the following description and drawings in which:

Figure 1 illustrates in planzview' a modified form of edgei-formationfor the 'purpose of uniting edges of plane sheets. a

Figure 2 is a perspective view of the sheets of Figure 1 illustrating the manner in which the edges of the sheets may be brought together for the purpose of uniting such edges.

Figure 3 is a plan view of the sheets of Figure 1 after such sheets have been united'along their edges. W

Figure 4 is a view in cross-sectionof the sheets of Figure 3 taken on line 44 and looking in the direction of the arrows.

Figure 5 is a perspective View showing an alternative method by which the sheets of Figure 1 may be laid together for the purpose of uniting them at their edges.

Figure 6 is a cross sectional view which corresponds to Figure 4 and'illustrates the formation of the uniting sheets of Figure 5.

Figure '7 is a plan view illustrating a modified Figure 12 is asectional view; in perspective taken along the line I 2-12 of Figure 11 and looking in the direction of the. arrows. I

In Figure l, I haveillustrated a preferred means .by which a secure union may be obtained between edges of adjacent sheets or opposed edges of asingle sheet. 'In the figure, sheets 300 and 300'are to be united at the edges 302'and .303; Each. edge carries series of tongues 304 extending from such'edge, which tongues maybe integral with the sh'eet to be joined, Lugs 305 extend from the lateral edges: of the tongues-304 andmay be integral with such tongues. Preferably, the spaces between tongues will beequal to the width of said tongues, such space being, however, wholly or partly filled up bylugs 305, adjacent lugs being separated by a cut or slot 305a as expediency requires.

In order to unite the sheets 300 and 300" by .means ot the tongues and lugs, such sheets should beplaced with respect to each other-so that each tongue 304 on each sheet will lie exactly opposite the space defined by lugs 305 and slot 305a between tongues on; the other sheet and thus lie opposite :a: pairoflugs 305.: The edges -302 and 303 of thersheets-300 and 300' are then brought. upin face. to;face relation to each other as showniin Figure 2, the tongues 304 are pushed beyond the 1ugs 305'- on the. opposed sheet so that eachpairvof lugs which originally were opposite a particular tongue of the opposed sheet engage which it is seen that lugs 305 are caught behind tongues. 304' and .lugs 30.5 are caught behind tongues 304', the said lugs 305' and 305 interlocking vwitheach other. Incross-section, the sheets thus joined will then present the appearance-of Figure 4, zedge 303 of sheet 300 overlapping and lyingaupon'sh'eet 3.00,and: the edge 3302 of sheet 300 overlapping and lying upon sheet 300'.

Where the sheets to be thus united are of relatively stifi material, I have found it useful to provide score lines 306 between the tongues 304 and the remainder of the sheet and also to provide additional score lines 301 between the lugs 305 and their respective tongues 304 in order to facilitate the operation by which lugs of opposed sheets are interlocked with each other and behind opposed tongues.

In using my novel uniting means, it is not essential to bring the edges of the sheet up in face to face relation as in Figure 2. The sheets 306 and turned up at approximatelyrrightian so that edges of opposite sheetsimayi'beaplaced in. face to face relation with each othernan d the, lugs and tongues interlocked; the sheet'sfthere-is' after being laid flat' with the overlapping edges ress edddwnjasishowninFigure 4. (Dr the sheets 'to -be united -maybe';1aid upon each other so that a the prefor'mfed edges comm e,- the lugs-and may be laid so that the edgesoverlap as shown in Figure 5; the tongues 304 may then be pressed ing a line ff-union whiji'cl'i' in cross 'ectiongpre'sehts the appearance of Figure 6;" which, it will be noted, is exactly similar to the line of union 9i Figure 4 which was formed by turning 'up the edges of the sheets in face to facegrelation with each other (Fig. 2) before interlocking the lugs and tongues.

tonguesmay-be pressed into interlocking relationship, 7 and the sheets laid flat, again producinl' the cross-sectional appearance of Figure 4. OrF'the tongues and their'aassociated lugs may {have the formation shown-in Figure 7 ,-the tongue 314 being pointedthe lugs 315 nevertheless being capablejbf'interlocking and'b'eing caught behind tongues in which case, the 7 points of each tongue-maybe inserted in the cut 316 behind a 1 fpairoflugs'and the sheets then pushed together -to fproducethe united 7 sheets of Figure 8. It

{ghoiild'benoted that such pointed formation will also facilitate the join'ing o'f sheets b'y'any of the otheroperations above described. a

Although I have illustrated rectangular and lpointedltongues' and lugs, it is obvious that many "other forms may be usedwithin the spirit of my invention- Their relative dimensions may be 'i ra r-ied and their shapes" otherwise changed without departing from the noveL- means described.

'alluca'ses; the, tongues and lugs may, in the united sheetsbe caused to appear-onxone side of such sheet only-as seen-in th'e plan viewgof Figures 3 and 8: 'l' he opp'osite' surface ofsuchunited sheet; may then be plane and .unmarred-as in Ei'gure-9 showing along line 3H only the barest =.-suggestion' oftth'e Ifact that; the; sheet had been :io'ined along suchliner t g i'Su'ch i a joint," by the :interlockingbof. lugs .and

(tongueawillcreatea secure mechanical seal not dependent on tape,.xadhesive, mortising or other means now-known intheian'tt II H .t In-addition, after the joint isformed, the over- --lapping and interlocking lugs :and tongues'j-imay be adhesively (attached-i110. the v\subjacent sheet to prevent any intentional disruption of z the joint.

Where .theisheetsi are compressible, 'as for instance pcorru'gatedgboard, the overlapping tonguesand lugs ma be compressed together with the subjac'ent portions of the united sheets so that the entire sheet may be of uniform thickness, and adhesive tape may be placed over'the joint for the 5 purpose of improving the appearance Q I- Thii form of joint gca nibe'of (exceptional usefulness in connection with safety envelopes and I A in the'formation of pilfer-proof closures therefor. The edge of the flap of such an envelope and thefree edge of the body of said envelope 7 l'laving the formation shownin Figure 1 or 7 the tongues and lugs being interlocked in the manner described in connection with Figure so that-theinterlocking lugs and tongues will lie on the ihteriorefkthe envelope'thus presenting at such line union an outer surface similar to ,that shown in F1gure'9. Such envelope then canot be. opened without tearing the lugs or tongues and thus revealing the fact that the envelope had been tampered with;

:In'Figures' 101-11, and 12,1 have shown a modification of 1 the construction-of i Figures 1 to" 9 in- 10) to be joined, have a mortised, indented, serrated, 0r broken edge producing tongues or extensions 352 separated by spaces 7353. As will be seen-more clearly from Figures 11-. and 12, sheets 350 and 351 may be laid together edge toiedge so that tongues or. extensions 352' of each sheet enter the spaces 3.53 between the tongues, of the opposite sheet, the edges of thetWo sheets being wholly or partiallycompressed into the body of the sheet upon which they rest to produce a level surface, and/or a'stripoftape may be adhesively affixed overt the line of union formed by the 40 tongues 352 wholl or partially covering the tongues and maintaining the predetermined deisired relation between them. Having now described my invention, I claim: 'A;formation'for the edge of aLsheet of fibrous materia1 forfijoiningxsuch edge .to' a; similarly formed edge; such formation comprising tongues extending from such .edge and lugs extending from the sideiedges of-said;tongues, the tongues of the similarly formed edge being juxtaposedop posite the lugs of the vfirst edge, the lugs of each edge being Vfoldable ito'pass vbetween the tongues 1 of the opposite edge-and being thereafter arrangeable to extend in surface to surface relation be vhindsaid tongues,- thetongues in eachedgebeing V substantially fiequal in width to vjthe spaces be-' tween the tongues; the lugs substantially filling aidspaces, said tongues being substantially itri- -jangu lar in shape; said lug -comprising:portions -ofsaidtriangulartongues'. I Y

iclusive, in which the sheets/ 355! and'35'i '(Figure interlocked by theinterlo'cking of the tongues 352, 

